Road-sanding apparatus.



G. H. GRAY. RQADSANlNG APPARATUS. APPucATmN FILED MAR. 9. :914.

1 1 65, 33 1 Patented Dec. 21, 1915.

Wl/aia( Gray. .Y t: w23.

examinar. n. eau, or Los ANGELES, CALIFORNIA. ,i

'f Roan-SANDING APPARATUS.

Specification of Letters Patent.

ratented'pee. e1, i915.

Application led Hatch 9, 1914. Serial No. 828,375.

To all whom it may concern.'

.. -a-Acitizen of the 10 apparatus.

ticular object of 15 Be it known that I, GRANVILLE H. GRAY,

United States, Los Angeles, in the county of Los Angeles, State of California, have invented 'new and useful Improvements in Road-Sanding Apparatus, of which the follow-ing is a speci cation. i f

This invention relates to va road sanding .It is the object lof this invention to rov1de an apparatus for distributing san on the surface of roadways, and it is the parthis invention to provide means for equally and uniformly distributing the sand. f

A further object is to provide a pneumatic means for projecting t e sand with force upon oiled roadways, whereby the sand will be thoroughly and rapidly embedded in the oil medium.

A further object is to provide means for regulating and controlling the discharge of sand `from the spreading apparatus by which any desired amount of sand can be delivered and distributed according to the nature and requirements of the roadway.

ther objects will appear hereinafter.

The invention primarily resides in a sand charlging hopper formed with a plurality' ofdisc ar e nozzles, means for regulating the iiow o sand into the.hPPer and from the nozzles, means for forcing the sand from the nozzles by air pressure, and means for uniformlydistributmg the sand discharged 'frame from the nozzles over the road surface.

The invention is illustrated in the laccompanying drawings, in which:

lgure 1 is a, side elevation of the lroad,

sandmg apparatus,- with parts removed. Fig. 2 1s a view in elevation Aof the rear end of the apparatus'with Fig. 3 is an enlarged detail section on the line 3--3 of Fig. 2. Fig. 4 is a detail section' in a vertical plane at right angles to vthe section of Fig. 3.

More specifi-cally, 5 indicates a truck rovided with front and rear wheels 6 and and fitted with a tiltable 'box bod', Whichboxbody is pivoted to the frame' 5 a jacent its rear'end and, is adapted 'tobe rocked lengthwise from the position 1nd1- 4catedu'indotted linesin Fig. 1 to the tionshown in full lines; theroclring o the Ody 8 being effected in any sultable manresiding at various positions `the hopper 15, whereby the space between the ends of the parts broken away.

osi-

ner. The meansf'for rocking" the body 8 is here shown as including a to a hanger 11 on the forward end ofthe body 8 and passing over lframe 14, whlch cable leads to a drum, not shown, controlled in any suitable manner.

e rear end of the body 8 ,opens to a hopcable attached per l15, the top and bottom walls of which converge A groundward plurality of discharge ho per are shown ing outwardly to orm the discharge end of t e hopper of a length span of the wheels 7 of the truck. H1nged at 18 on the top member of the hopper l5 and extending throughout the, width of the hopper is a gate 19, the lower edge of lwhich and terminate ina 'gate is designed to abut against the rear end of the bottom of the body 8 to close the recelving end of the hopper and prevent the passage of sand theremto from the body 8 when the sand is being conveyed to a point of discharge. The gate 129 is also provided for the purpose of regulatin the iiow `of sand from the body 8 into'the opper 15, for which purpose it is 'provided Awith an adjusting means by which it may be secured i relative to the bottom o the lower edge of the gate and the bottom of the hopper may be varied in width according to the amount of sand it is desired to discharge into the lower portion of the hopper. 4shown as consisting of bolts 20 mounted on each end .of the ate 19 and passing through arcuate slots 21 ormed in the ends 17 of the hopper concentric with the pivots *of the hinges 18; the bolts 2O being threaded on their outer ends to receive nuts 22 by which ate 19 may be 'securely clamped to the ens 17 of the-hopper. For the purpose of preventing leakage of the sand through .the "slots 21 shield plates 23 are attached to the upper faces of the gate 9 in such position as to normally extend over the slots 21 as 'illustrated in Fig. 3. Means are also providedfor closing the aperture or space betweenthe lower edge of the gate 19 and `the bottom of the hopper 15 independent of, thegate 19 for the purpose of temporarily cutting off the flow of sand into the lower when turning the apparatus, or when moving from one point to another where 1t 1s pulleys 13 on al nozzles 16. The'end:

as divergapproximating the This adjusting means is here portion lof the hopper, as l groundward convergent hopper on the end thereof, a plurality of sand discharge nozzles on the lower end of said hopper, means for forcing the sand from said nozzles by air pressure, means in the hopper for regulating the flow of sand to said nozzles, and means for agitating the sand Within the hopper.

2. In a sand distributing apparatus, a vertically and longitudinally tiltable truck body, aahopper affixed to the rear end thereof, a hinged gate within said hopper, means for rigidly holding said gate against movement in various adjusted positions to regulate or inhibit the How `of sand into vsaid hopper, and an auxiliary gate hinged to the first named gate adapted to be operated independent thereof to prevent the entrance of sand into the hopper.

3. In a road sanding apparatus, a'boX body, a groundward convergent hopper af.- n

fixed thereto, a plurality of sand discharging nozzles on said hopper, means for regulating the flow of sand from the box body to the nozzles, means for agitating the sand. in the hopper, and air nozzles extendingl into .the

l gate extending through arcuate slots in the sides of the hopper-adapted to receive nuts, whereby the gate is held rigidly against movement in Various positions to regulate the flouY of sand into said hopper, and an auxiliary gate hinged to the first-named gate adapted to be operated to prevent the entrance of sand'into the hopper.

In witness that'I claim the foregoingI I have hereunto subscribed my name this 2th day of vFebruar 1914.

RANVILLE H. GRAY. Witnesses:

EDMUNDA. STRAUSE, MARIE BATTEY. 

